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Laser-induced time-resolved luminescence of natural sillimanite Al2SiO5 and synthetic Al2SiO5 activated by chromium |
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| Authors: | M Gaft W Strek L Nagli G Panczer GR Rossman L Marciniak |
| Institution: | 1. Laser Distance Spectrometry Company (LDS), Petach Tikva, Israel;2. Institute for Low Temperature and Structure Research, Polish Academy of Sciences, Wroclaw, Poland;3. Physical Chemistry of Luminescence Materials Laboratory, Lyon 1 University, UMR 5620 CNRS, Villeurbanne, France;4. Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125-2500, USA |
| Abstract: | Luminescence of natural sillimanite Al2SiO5 was studied by a laser-induced time-resolved technique combined with absorption spectroscopy. It was found that two red broad emission bands are connected to Fe3+ and Cr3+ luminescence centers. Chromium participation in luminescence was proved by the study of synthetic sillimanite activated by Cr. Several narrow emission lines have been found which were preliminary ascribed to Mn4+ and V2+ luminescence centers. |
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